Downloading SIMBL 1.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The following versions: 1.2 and 0.9 are the most frequently downloaded ones by the program users.
This free application is suitable for Mac OS X 10.4 or later. The application is included in Developer Tools. This free Mac app was originally designed by Mike Solomon. The application is sometimes referred to as "SIMBL Uninstaller", "SIMBL- Leopard", "SIMBL.pkg".
SIMBL-0.9.9.zip is the most common filename for this application's installer. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
SIMBL is a simple system for loading custom code into Cocoa applications. SIMBL (SIMple Bundle Loader), pronounced like "symbol" or "cymbal", enables hacks and plugins. For instance, SIMBL enables PithHelmet to enhance Safari. This application is very easy to use.
You may want to check out more software for Mac, such as SIMBL Agent, mySIMBL or RelaunchFinder, which might be similar to SIMBL.